I have Borla attak quads, not as loud since I have boss pipes open...
Black 2014 Mustang GT Base
MRT Boss H Pipe, QTP(with wireless), KOOKS Side Pipe, W/O Resonators, FRS QUADS, Pro-Cal Tune
GT500 Valence, MMD Window Pannels Kenwood Excelon DDX9903S
2 Alpine PDX-V9
2 Alpine SBR-S8
Morel Elate 6.5"